Improvement in sickle-bars



tniicll tatw CHARLES o. GARDINER, or- SPRINGFIELD, 01110.'

Leum Patent No. 100.392. zum Mmh 1, 1870.

IMPROVEMENT IN SICKLE-ZBARS.

-'l'.'lxo Schedule referred to in these Lettera Patent and making part of the name To all 'whom it may .concern l l Be it known that I, CHA-nnss O. GARDINER, of Springfield, in the count-y of Clark, and State of Ohio, have invented certain new and useful Improvements lin Sickle-Bars; and I do hereby declare that the following is a full, clear, and exact description thereof,

reference being had to the accompanying drawings making part of this specification, and tothe letters of reference marked thereon, like letters indicating like parts wherever they occur.

To enable others skilled in the art to construct and use my invention, I will proceed to describe it;

lMy invention'relatesto sickles usedin reapers and mowers: and i l The invention consists in constructing the.head, where-,itis attached to the pitman, in novel manner, so that the joint can he tightened up as it-beoomes I loose by wear, as hereinafter `more fully explained.

vention, and to accomplish it, I construct the head of the bar A with a split or open joint, as 'represented in the drawings.

The eye O I'form of twoparts, E. and F, each extending about half way round, and terminating in parallel projections or lips 0, as shown clearly in lig.'1.

Through these lips O, in line with the bar A,ahole is made to receive a bolt, I, as shown in thedrawin gs,

This' bolt I has a screw-thread cut on it, and there is a corresponding thread'cut in the lip on the part F, so that by turning the bolt I,'the lips O are drawn together more closely,.the parts E and F springing snfticiently for that purpose, thus tightening up the eye C on the bolt that unites it to the pitman.

A jamb-nut, .1, is then screwed onto the end of bolt I,v to prevent the latter from working loose by the jar or vibration of the parts.

If preferred, the thread in the part E may he omitted, and two nuts used instead, and to render the parts still more secure, the inner face of the not J and the adjoining face of the lip O may both he roughened, to prevent the-nut from turning or working loose. These heads may be forged solid on the bar, as a part of it, y

or they may be made separately4 and then riveted, welded, or boltedto the bar.

In this latter manner, vthey can be furnished by the trade to-farmers, who can thus apply them to sickles already in use.

Having thus described my invention,

What I claim, is-

,A sickle-bar-head, constructed with an open joint, in the manner described, so that the joint may be tighteued'up, to compensate for wear, and prevent rattling, substantially as set forth.

CHARLES 0. GARDINER.

Witnesses:

Gao. ARTHUR,

O. Gn-Gaoomm. 

